gunzip : invalid compressed data

[Lowell Gilbert]

synack at netspace.net.au writes:

>  I have recently downloaded a .tgz file to an m.s XP machine then ftp'd it to my BSD laptop. When I try to open the file with tar or gunzip, I get the following;
> file.tgz : invalid compressed data--format violated. Is this due to the file being transfered from a NTFS? Pls cc me if you can help 

One way or another, the file got corrupted.  It won't have anything to
do with having been on NTFS for part of its life; much more likely it
got corrupted in one of the network transfers (e.g., FTP in "text" mode).